Improper Authorization Affecting github.com/kcp-dev/kcp/pkg/proxy package, versions <0.26.1
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- published12 Dec 2024
- disclosed11 Dec 2024
- creditUnknown
Introduced: 11 Dec 2024
New CVE NOT AVAILABLE CWE-285 Â (opens in a new tab)How to fix?
Upgrade github.com/kcp-dev/kcp/pkg/proxy to version 0.26.1 or higher.
Overview
Affected versions of this package are vulnerable to Improper Authorization due to the impersonate verb. An attacker can gain unauthorized access to global administrative groups by exploiting the impersonation feature, which is intended for users with high privilege levels such as cluster-admin.
Workaround
This vulnerability can be mitigated by not assigning the cluster-admin role or any other role granting blanket impersonation permissions to users. Additionally, implementing a reverse proxy to check for the Impersonate-Group header and reject requests impersonating global administrative groups can further secure the system.